（四十九）c#Winform自定义控件-下拉框（表格）
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2022-07-02 13:19:38
前提 入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。 GitHub：https://github.com/kwwwvagaa/NetWinformControl 码云：https://gitee.com/kwwwvagaa/net_winform_custom_contr ......
前提
入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。
github：https://github.com/kwwwvagaa/netwinformcontrol
码云：
如果觉得写的还行，请点个 star 支持一下吧
欢迎前来交流探讨： 企鹅群568015492
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nuget
install-package hzh_controls
目录
用处及效果
1 list<datagridviewcolumnentity> lstculumns = new list<datagridviewcolumnentity>();
2 lstculumns.add(new datagridviewcolumnentity() { datafield = "id", headtext = "编号", width = 70, widthtype = sizetype.absolute });
3 lstculumns.add(new datagridviewcolumnentity() { datafield = "name", headtext = "姓名", width = 100, widthtype = sizetype.absolute });
4 lstculumns.add(new datagridviewcolumnentity() { datafield = "age", headtext = "年龄", width = 100, widthtype = sizetype.absolute });
5 lstculumns.add(new datagridviewcolumnentity() { datafield = "birthday", headtext = "生日", width = 120, widthtype = sizetype.absolute, format = (a) => { return ((datetime)a).tostring("yyyy-mm-dd"); } });
6 lstculumns.add(new datagridviewcolumnentity() { datafield = "sex", headtext = "性别", width = 100, widthtype = sizetype.absolute, format = (a) => { return ((int)a) == 0 ? "女" : "男"; } });
7 this.uccomboxgrid1.gridcolumns = lstculumns;
8 list<object> lstsourcegrid = new list<object>();
9 for (int i = 0; i < 100; i++)
10 {
11 testmodel model = new testmodel()
12 {
13 id = i.tostring(),
14 age = 3 * i,
15 name = "姓名——" + i,
16 birthday = datetime.now.addyears(-10),
17 sex = i % 2
18 };
19 lstsourcegrid.add(model);
20 }
21 this.uccomboxgrid1.griddatasource = lstsourcegrid;
准备工作
此控件继承自uccombox，并且需要表格控件ucdatagridview，如果不了解请移步查看
如果你想显示树形结构，请移步查看
（四十七）c#winform自定义控件-树表格（treegrid）
开始
我们首先需要一个弹出的面板，那么我们先添加一个用户控件uccomboxgridpanel，在这个用户控件上添加一个文本框进行搜索，添加一个表格展示数据
一些属性
1 [description("项点击事件"), category("自定义")]
2 public event datagridvieweventhandler itemclick;
3 private type m_rowtype = typeof(ucdatagridviewrow);
4
5 public type rowtype
6 {
7 get { return m_rowtype; }
8 set
9 {
10 m_rowtype = value;
11 this.ucdatagridview1.rowtype = m_rowtype;
12 }
13 }
14
15 private list<datagridviewcolumnentity> m_columns = null;
16
17 public list<datagridviewcolumnentity> columns
18 {
19 get { return m_columns; }
20 set
21 {
22 m_columns = value;
23 this.ucdatagridview1.columns = value;
24 }
25 }
26 private list<object> m_datasource = null;
27
28 public list<object> datasource
29 {
30 get { return m_datasource; }
31 set { m_datasource = value; }
32 }
33
34 private string strlastsearchtext = string.empty;
35 ucpagercontrol m_page = new ucpagercontrol();
一些事件，处理数据绑定
1 void ucdatagridview1_itemclick(object sender, datagridvieweventargs e)
2 {
3 if (itemclick != null)
4 {
5 itemclick((sender as idatagridviewrow).datasource, null);
6 }
7 }
8
9 void txtinput_textchanged(object sender, eventargs e)
10 {
11 timer1.enabled = false;
12 timer1.enabled = true;
13 }
14
15 private void uccomboxgridpanel_load(object sender, eventargs e)
16 {
17 m_page.datasource = m_datasource;
18 this.ucdatagridview1.datasource = m_page.getcurrentsource();
19 }
20
21 private void timer1_tick(object sender, eventargs e)
22 {
23 if (strlastsearchtext == txtsearch.inputtext)
24 {
25 timer1.enabled = false;
26 }
27 else
28 {
29 strlastsearchtext = txtsearch.inputtext;
30 search(txtsearch.inputtext);
31 }
32 }
33
34 private void search(string strtext)
35 {
36 m_page.startindex = 0;
37 if (!string.isnullorempty(strtext))
38 {
39 strtext = strtext.tolower();
40 list<object> lst = m_datasource.findall(p => m_columns.any(c => (c.format == null ? (p.gettype().getproperty(c.datafield).getvalue(p, null).tostringext()) : c.format(p.gettype().getproperty(c.datafield).getvalue(p, null))).tolower().contains(strtext)));
41 m_page.datasource = lst;
42 }
43 else
44 {
45 m_page.datasource = m_datasource;
46 }
47 m_page.reload();
48 }
完整代码
1 using system;
2 using system.collections.generic;
3 using system.componentmodel;
4 using system.drawing;
5 using system.data;
6 using system.linq;
7 using system.text;
8 using system.windows.forms;
9
10 namespace hzh_controls.controls.combobox
11 {
12 [toolboxitem(false)]
13 public partial class uccomboxgridpanel : usercontrol
14 {
15 [description("项点击事件"), category("自定义")]
16 public event datagridvieweventhandler itemclick;
17 private type m_rowtype = typeof(ucdatagridviewrow);
18
19 public type rowtype
20 {
21 get { return m_rowtype; }
22 set
23 {
24 m_rowtype = value;
25 this.ucdatagridview1.rowtype = m_rowtype;
26 }
27 }
28
29 private list<datagridviewcolumnentity> m_columns = null;
30
31 public list<datagridviewcolumnentity> columns
32 {
33 get { return m_columns; }
34 set
35 {
36 m_columns = value;
37 this.ucdatagridview1.columns = value;
38 }
39 }
40 private list<object> m_datasource = null;
41
42 public list<object> datasource
43 {
44 get { return m_datasource; }
45 set { m_datasource = value; }
46 }
47
48 private string strlastsearchtext = string.empty;
49 ucpagercontrol m_page = new ucpagercontrol();
50
51 public uccomboxgridpanel()
52 {
53 initializecomponent();
54 this.ucdatagridview1.page = m_page;
55 this.ucdatagridview1.isautoheight = false;
56 this.txtsearch.txtinput.textchanged += txtinput_textchanged;
57 this.ucdatagridview1.itemclick += ucdatagridview1_itemclick;
58 }
59
60 void ucdatagridview1_itemclick(object sender, datagridvieweventargs e)
61 {
62 if (itemclick != null)
63 {
64 itemclick((sender as idatagridviewrow).datasource, null);
65 }
66 }
67
68 void txtinput_textchanged(object sender, eventargs e)
69 {
70 timer1.enabled = false;
71 timer1.enabled = true;
72 }
73
74 private void uccomboxgridpanel_load(object sender, eventargs e)
75 {
76 m_page.datasource = m_datasource;
77 this.ucdatagridview1.datasource = m_page.getcurrentsource();
78 }
79
80 private void timer1_tick(object sender, eventargs e)
81 {
82 if (strlastsearchtext == txtsearch.inputtext)
83 {
84 timer1.enabled = false;
85 }
86 else
87 {
88 strlastsearchtext = txtsearch.inputtext;
89 search(txtsearch.inputtext);
90 }
91 }
92
93 private void search(string strtext)
94 {
95 m_page.startindex = 0;
96 if (!string.isnullorempty(strtext))
97 {
98 strtext = strtext.tolower();
99 list<object> lst = m_datasource.findall(p => m_columns.any(c => (c.format == null ? (p.gettype().getproperty(c.datafield).getvalue(p, null).tostringext()) : c.format(p.gettype().getproperty(c.datafield).getvalue(p, null))).tolower().contains(strtext)));
100 m_page.datasource = lst;
101 }
102 else
103 {
104 m_page.datasource = m_datasource;
105 }
106 m_page.reload();
107 }
108 }
109 }
1 namespace hzh_controls.controls.combobox
2 {
3 partial class uccomboxgridpanel
4 {
5 /// <summary>
6 /// 必需的设计器变量。
7 /// </summary>
8 private system.componentmodel.icontainer components = null;
9
10 /// <summary>
11 /// 清理所有正在使用的资源。
12 /// </summary>
13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14 protected override void dispose(bool disposing)
15 {
16 if (disposing && (components != null))
17 {
18 components.dispose();
19 }
20 base.dispose(disposing);
21 }
22
23 #region 组件设计器生成的代码
24
25 /// <summary>
26 /// 设计器支持所需的方法 - 不要
27 /// 使用代码编辑器修改此方法的内容。
28 /// </summary>
29 private void initializecomponent()
30 {
31 this.components = new system.componentmodel.container();
32 this.panel1 = new system.windows.forms.panel();
33 this.panel2 = new system.windows.forms.panel();
34 this.timer1 = new system.windows.forms.timer(this.components);
35 this.uccontrolbase1 = new hzh_controls.controls.uccontrolbase();
36 this.ucdatagridview1 = new hzh_controls.controls.ucdatagridview();
37 this.txtsearch = new hzh_controls.controls.uctextboxex();
38 this.ucsplitline_v2 = new hzh_controls.controls.ucsplitline_v();
39 this.ucsplitline_v1 = new hzh_controls.controls.ucsplitline_v();
40 this.ucsplitline_h2 = new hzh_controls.controls.ucsplitline_h();
41 this.ucsplitline_h1 = new hzh_controls.controls.ucsplitline_h();
42 this.panel1.suspendlayout();
43 this.uccontrolbase1.suspendlayout();
44 this.suspendlayout();
45 //
46 // panel1
47 //
48 this.panel1.controls.add(this.uccontrolbase1);
49 this.panel1.controls.add(this.panel2);
50 this.panel1.controls.add(this.txtsearch);
51 this.panel1.dock = system.windows.forms.dockstyle.fill;
52 this.panel1.location = new system.drawing.point(1, 1);
53 this.panel1.name = "panel1";
54 this.panel1.padding = new system.windows.forms.padding(5);
55 this.panel1.size = new system.drawing.size(447, 333);
56 this.panel1.tabindex = 4;
57 //
58 // panel2
59 //
60 this.panel2.dock = system.windows.forms.dockstyle.top;
61 this.panel2.location = new system.drawing.point(5, 47);
62 this.panel2.name = "panel2";
63 this.panel2.size = new system.drawing.size(437, 15);
64 this.panel2.tabindex = 1;
65 //
66 // timer1
67 //
68 this.timer1.interval = 1000;
69 this.timer1.tick += new system.eventhandler(this.timer1_tick);
70 //
71 // uccontrolbase1
72 //
73 this.uccontrolbase1.conerradius = 5;
74 this.uccontrolbase1.controls.add(this.ucdatagridview1);
75 this.uccontrolbase1.dock = system.windows.forms.dockstyle.fill;
76 this.uccontrolbase1.fillcolor = system.drawing.color.transparent;
77 this.uccontrolbase1.font = new system.drawing.font("微软雅黑", 15f, system.drawing.fontstyle.regular, system.drawing.graphicsunit.pixel);
78 this.uccontrolbase1.isradius = false;
79 this.uccontrolbase1.isshowrect = true;
80 this.uccontrolbase1.location = new system.drawing.point(5, 62);
81 this.uccontrolbase1.margin = new system.windows.forms.padding(4, 5, 4, 5);
82 this.uccontrolbase1.name = "uccontrolbase1";
83 this.uccontrolbase1.padding = new system.windows.forms.padding(5);
84 this.uccontrolbase1.rectcolor = system.drawing.color.fromargb(((int)(((byte)(220)))), ((int)(((byte)(220)))), ((int)(((byte)(220)))));
85 this.uccontrolbase1.rectwidth = 1;
86 this.uccontrolbase1.size = new system.drawing.size(437, 266);
87 this.uccontrolbase1.tabindex = 2;
88 this.uccontrolbase1.tabstop = false;
89 //
90 // ucdatagridview1
91 //
92 this.ucdatagridview1.backcolor = system.drawing.color.white;
93 this.ucdatagridview1.columns = null;
94 this.ucdatagridview1.datasource = null;
95 this.ucdatagridview1.dock = system.windows.forms.dockstyle.fill;
96 this.ucdatagridview1.headfont = new system.drawing.font("微软雅黑", 12f);
97 this.ucdatagridview1.headheight = 40;
98 this.ucdatagridview1.headpadingleft = 0;
99 this.ucdatagridview1.headtextcolor = system.drawing.color.black;
100 this.ucdatagridview1.isautoheight = false;
101 this.ucdatagridview1.isshowcheckbox = false;
102 this.ucdatagridview1.isshowhead = true;
103 this.ucdatagridview1.location = new system.drawing.point(5, 5);
104 this.ucdatagridview1.name = "ucdatagridview1";
105 this.ucdatagridview1.page = null;
106 this.ucdatagridview1.rowheight = 30;
107 this.ucdatagridview1.rowtype = typeof(hzh_controls.controls.ucdatagridviewrow);
108 this.ucdatagridview1.size = new system.drawing.size(427, 256);
109 this.ucdatagridview1.tabindex = 0;
110 this.ucdatagridview1.tabstop = false;
111 //
112 // txtsearch
113 //
114 this.txtsearch.backcolor = system.drawing.color.transparent;
115 this.txtsearch.conerradius = 5;
116 this.txtsearch.cursor = system.windows.forms.cursors.ibeam;
117 this.txtsearch.declength = 2;
118 this.txtsearch.dock = system.windows.forms.dockstyle.top;
119 this.txtsearch.fillcolor = system.drawing.color.empty;
120 this.txtsearch.font = new system.drawing.font("微软雅黑", 18f, system.drawing.fontstyle.regular, system.drawing.graphicsunit.pixel);
121 this.txtsearch.inputtext = "";
122 this.txtsearch.inputtype = hzh_controls.textinputtype.notcontrol;
123 this.txtsearch.isfocuscolor = true;
124 this.txtsearch.isradius = true;
125 this.txtsearch.isshowclearbtn = true;
126 this.txtsearch.isshowkeyboard = false;
127 this.txtsearch.isshowrect = true;
128 this.txtsearch.isshowsearchbtn = false;
129 this.txtsearch.keyboardtype = hzh_controls.controls.keyboardtype.uckeyborderall_en;
130 this.txtsearch.location = new system.drawing.point(5, 5);
131 this.txtsearch.margin = new system.windows.forms.padding(4, 5, 4, 5);
132 this.txtsearch.maxvalue = new decimal(new int[] {
133 1000000,
134 0,
135 0,
136 0});
137 this.txtsearch.minvalue = new decimal(new int[] {
138 1000000,
139 0,
140 0,
141 -2147483648});
142 this.txtsearch.name = "txtsearch";
143 this.txtsearch.padding = new system.windows.forms.padding(5);
144 this.txtsearch.promptcolor = system.drawing.color.gray;
145 this.txtsearch.promptfont = new system.drawing.font("微软雅黑", 15f, system.drawing.fontstyle.regular, system.drawing.graphicsunit.pixel);
146 this.txtsearch.prompttext = "输入内容模糊搜索";
147 this.txtsearch.rectcolor = system.drawing.color.fromargb(((int)(((byte)(220)))), ((int)(((byte)(220)))), ((int)(((byte)(220)))));
148 this.txtsearch.rectwidth = 1;
149 this.txtsearch.regexpattern = "";
150 this.txtsearch.size = new system.drawing.size(437, 42);
151 this.txtsearch.tabindex = 0;
152 //
153 // ucsplitline_v2
154 //
155 this.ucsplitline_v2.backcolor = system.drawing.color.fromargb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
156 this.ucsplitline_v2.dock = system.windows.forms.dockstyle.right;
157 this.ucsplitline_v2.location = new system.drawing.point(448, 1);
158 this.ucsplitline_v2.name = "ucsplitline_v2";
159 this.ucsplitline_v2.size = new system.drawing.size(1, 333);
160 this.ucsplitline_v2.tabindex = 3;
161 this.ucsplitline_v2.tabstop = false;
162 //
163 // ucsplitline_v1
164 //
165 this.ucsplitline_v1.backcolor = system.drawing.color.fromargb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
166 this.ucsplitline_v1.dock = system.windows.forms.dockstyle.left;
167 this.ucsplitline_v1.location = new system.drawing.point(0, 1);
168 this.ucsplitline_v1.name = "ucsplitline_v1";
169 this.ucsplitline_v1.size = new system.drawing.size(1, 333);
170 this.ucsplitline_v1.tabindex = 2;
171 this.ucsplitline_v1.tabstop = false;
172 //
173 // ucsplitline_h2
174 //
175 this.ucsplitline_h2.backcolor = system.drawing.color.fromargb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
176 this.ucsplitline_h2.dock = system.windows.forms.dockstyle.bottom;
177 this.ucsplitline_h2.location = new system.drawing.point(0, 334);
178 this.ucsplitline_h2.name = "ucsplitline_h2";
179 this.ucsplitline_h2.size = new system.drawing.size(449, 1);
180 this.ucsplitline_h2.tabindex = 1;
181 this.ucsplitline_h2.tabstop = false;
182 //
183 // ucsplitline_h1
184 //
185 this.ucsplitline_h1.backcolor = system.drawing.color.fromargb(((int)(((byte)(232)))), ((int)(((byte)(232)))), ((int)(((byte)(232)))));
186 this.ucsplitline_h1.dock = system.windows.forms.dockstyle.top;
187 this.ucsplitline_h1.location = new system.drawing.point(0, 0);
188 this.ucsplitline_h1.name = "ucsplitline_h1";
189 this.ucsplitline_h1.size = new system.drawing.size(449, 1);
190 this.ucsplitline_h1.tabindex = 0;
191 this.ucsplitline_h1.tabstop = false;
192 //
193 // uccomboxgridpanel
194 //
195 this.autoscalemode = system.windows.forms.autoscalemode.none;
196 this.backcolor = system.drawing.color.white;
197 this.controls.add(this.panel1);
198 this.controls.add(this.ucsplitline_v2);
199 this.controls.add(this.ucsplitline_v1);
200 this.controls.add(this.ucsplitline_h2);
201 this.controls.add(this.ucsplitline_h1);
202 this.name = "uccomboxgridpanel";
203 this.size = new system.drawing.size(449, 335);
204 this.load += new system.eventhandler(this.uccomboxgridpanel_load);
205 this.panel1.resumelayout(false);
206 this.uccontrolbase1.resumelayout(false);
207 this.resumelayout(false);
208
209 }
210
211 #endregion
212
213 private ucsplitline_h ucsplitline_h1;
214 private ucsplitline_h ucsplitline_h2;
215 private ucsplitline_v ucsplitline_v1;
216 private ucsplitline_v ucsplitline_v2;
217 private system.windows.forms.panel panel1;
218 private uccontrolbase uccontrolbase1;
219 private ucdatagridview ucdatagridview1;
220 private system.windows.forms.panel panel2;
221 private system.windows.forms.timer timer1;
222 private uctextboxex txtsearch;
223 }
224 }
以上，弹出面板完成，下面就是下拉控件了
添加一个用户控件uccomboxgrid，继承uccombox
一些属性
1 private type m_rowtype = typeof(ucdatagridviewrow);
2
3 [description("表格行类型"), category("自定义")]
4 public type gridrowtype
5 {
6 get { return m_rowtype; }
7 set
8 {
9 m_rowtype = value;
10 }
11 }
12 int intwidth = 0;
13
14 private list<datagridviewcolumnentity> m_columns = null;
15
16 [description("表格列"), category("自定义")]
17 public list<datagridviewcolumnentity> gridcolumns
18 {
19 get { return m_columns; }
20 set
21 {
22 m_columns = value;
23 if (value != null)
24 intwidth = value.sum(p => p.widthtype == sizetype.absolute ? p.width : (p.width < 80 ? 80 : p.width));
25 }
26 }
27 private list<object> m_datasource = null;
28
29 [description("表格数据源"), category("自定义")]
30 public list<object> griddatasource
31 {
32 get { return m_datasource; }
33 set { m_datasource = value; }
34 }
35
36 private string m_textfield;
37
38 [description("显示值字段名称"), category("自定义")]
39 public string textfield
40 {
41 get { return m_textfield; }
42 set
43 {
44 m_textfield = value;
45 settext();
46 }
47 }
48 [obsolete("不再可用的属性")]
49 [browsable(false), editorbrowsable(editorbrowsablestate.never)]
50 private new comboboxstyle boxstyle
51 {
52 get;
53 set;
54 }
55 private object selectsource = null;
56
57 [description("选中的数据源"), category("自定义")]
58 public object selectsource
59 {
60 get { return selectsource; }
61 set
62 {
63 selectsource = value;
64 settext();
65 if (selectedchangedevent != null)
66 {
67 selectedchangedevent(value, null);
68 }
69 }
70 }
71
72 [description("选中数据源改变事件"), category("自定义")]
73 public new event eventhandler selectedchangedevent;
重写点击事件来处理弹出
1 protected override void click_mousedown(object sender, mouseeventargs e)
2 {
3 if (m_columns == null || m_columns.count <= 0)
4 return;
5 if (m_ucpanel == null)
6 {
7 var p = this.parent.pointtoscreen(this.location);
8 int intscreenheight = screen.primaryscreen.bounds.height;
9 int intheight = math.max(p.y, intscreenheight - p.y - this.height);
10 intheight -= 100;
11 m_ucpanel = new uccomboxgridpanel();
12 m_ucpanel.itemclick += m_ucpanel_itemclick;
13 m_ucpanel.height = intheight;
14 m_ucpanel.width = intwidth;
15 m_ucpanel.columns = m_columns;
16 m_ucpanel.rowtype = m_rowtype;
17 if (m_datasource != null && m_datasource.count > 0)
18 {
19 int _intheight = math.min(110 + m_datasource.count * 36, m_ucpanel.height);
20 m_ucpanel.height = _intheight;
21 }
22 }
23 m_ucpanel.datasource = m_datasource;
24 if (_frmanchor == null || _frmanchor.isdisposed || _frmanchor.visible == false)
25 {
26 _frmanchor = new forms.frmanchor(this, m_ucpanel);
27 _frmanchor.show(this.findform());
28 }
29
30 }
31
32 void m_ucpanel_itemclick(object sender, datagridvieweventargs e)
33 {
34 _frmanchor.hide();
35 selectsource = sender;
36 }
37
38 private void settext()
39 {
40 if (!string.isnullorempty(m_textfield) && selectsource != null)
41 {
42 var pro = selectsource.gettype().getproperty(m_textfield);
43 if (pro != null)
44 {
45 textvalue = pro.getvalue(selectsource, null).tostringext();
46 }
47 }
48 }
完整代码
1 using system;
2 using system.collections.generic;
3 using system.componentmodel;
4 using system.drawing;
5 using system.data;
6 using system.linq;
7 using system.text;
8 using system.windows.forms;
9 using hzh_controls.controls;
10
11 namespace hzh_controls.controls.combobox
12 {
13 public partial class uccomboxgrid : uccombox
14 {
15
16 private type m_rowtype = typeof(ucdatagridviewrow);
17
18 [description("表格行类型"), category("自定义")]
19 public type gridrowtype
20 {
21 get { return m_rowtype; }
22 set
23 {
24 m_rowtype = value;
25 }
26 }
27 int intwidth = 0;
28
29 private list<datagridviewcolumnentity> m_columns = null;
30
31 [description("表格列"), category("自定义")]
32 public list<datagridviewcolumnentity> gridcolumns
33 {
34 get { return m_columns; }
35 set
36 {
37 m_columns = value;
38 if (value != null)
39 intwidth = value.sum(p => p.widthtype == sizetype.absolute ? p.width : (p.width < 80 ? 80 : p.width));
40 }
41 }
42 private list<object> m_datasource = null;
43
44 [description("表格数据源"), category("自定义")]
45 public list<object> griddatasource
46 {
47 get { return m_datasource; }
48 set { m_datasource = value; }
49 }
50
51 private string m_textfield;
52
53 [description("显示值字段名称"), category("自定义")]
54 public string textfield
55 {
56 get { return m_textfield; }
57 set
58 {
59 m_textfield = value;
60 settext();
61 }
62 }
63 [obsolete("不再可用的属性")]
64 [browsable(false), editorbrowsable(editorbrowsablestate.never)]
65 private new comboboxstyle boxstyle
66 {
67 get;
68 set;
69 }
70 private object selectsource = null;
71
72 [description("选中的数据源"), category("自定义")]
73 public object selectsource
74 {
75 get { return selectsource; }
76 set
77 {
78 selectsource = value;
79 settext();
80 if (selectedchangedevent != null)
81 {
82 selectedchangedevent(value, null);
83 }
84 }
85 }
86
87
88
89 [description("选中数据源改变事件"), category("自定义")]
90 public new event eventhandler selectedchangedevent;
91 public uccomboxgrid()
92 {
93 initializecomponent();
94 }
95 uccomboxgridpanel m_ucpanel = null;
96 forms.frmanchor _frmanchor;
97 protected override void click_mousedown(object sender, mouseeventargs e)
98 {
99 if (m_columns == null || m_columns.count <= 0)
100 return;
101 if (m_ucpanel == null)
102 {
103 var p = this.parent.pointtoscreen(this.location);
104 int intscreenheight = screen.primaryscreen.bounds.height;
105 int intheight = math.max(p.y, intscreenheight - p.y - this.height);
106 intheight -= 100;
107 m_ucpanel = new uccomboxgridpanel();
108 m_ucpanel.itemclick += m_ucpanel_itemclick;
109 m_ucpanel.height = intheight;
110 m_ucpanel.width = intwidth;
111 m_ucpanel.columns = m_columns;
112 m_ucpanel.rowtype = m_rowtype;
113 if (m_datasource != null && m_datasource.count > 0)
114 {
115 int _intheight = math.min(110 + m_datasource.count * 36, m_ucpanel.height);
116 m_ucpanel.height = _intheight;
117 }
118 }
119 m_ucpanel.datasource = m_datasource;
120 if (_frmanchor == null || _frmanchor.isdisposed || _frmanchor.visible == false)
121 {
122 _frmanchor = new forms.frmanchor(this, m_ucpanel);
123 _frmanchor.show(this.findform());
124 }
125
126 }
127
128 void m_ucpanel_itemclick(object sender, datagridvieweventargs e)
129 {
130 _frmanchor.hide();
131 selectsource = sender;
132 }
133
134 private void settext()
135 {
136 if (!string.isnullorempty(m_textfield) && selectsource != null)
137 {
138 var pro = selectsource.gettype().getproperty(m_textfield);
139 if (pro != null)
140 {
141 textvalue = pro.getvalue(selectsource, null).tostringext();
142 }
143 }
144 }
145 }
146 }
1 namespace hzh_controls.controls.combobox
2 {
3 partial class uccomboxgrid
4 {
5 /// <summary>
6 /// 必需的设计器变量。
7 /// </summary>
8 private system.componentmodel.icontainer components = null;
9
10 /// <summary>
11 /// 清理所有正在使用的资源。
12 /// </summary>
13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14 protected override void dispose(bool disposing)
15 {
16 if (disposing && (components != null))
17 {
18 components.dispose();
19 }
20 base.dispose(disposing);
21 }
22
23 #region 组件设计器生成的代码
24
25 /// <summary>
26 /// 设计器支持所需的方法 - 不要
27 /// 使用代码编辑器修改此方法的内容。
28 /// </summary>
29 private void initializecomponent()
30 {
31 this.suspendlayout();
32 //
33 // txtinput
34 //
35 this.txtinput.backcolor = system.drawing.color.fromargb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
36 //
37 // uccomboxgrid
38 //
39 this.autoscalemode = system.windows.forms.autoscalemode.none;
40 this.backcolor = system.drawing.color.transparent;
41 this.boxstyle = system.windows.forms.comboboxstyle.dropdownlist;
42 this.fillcolor = system.drawing.color.fromargb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
43 this.name = "uccomboxgrid";
44 this.rectcolor = system.drawing.color.fromargb(((int)(((byte)(240)))), ((int)(((byte)(240)))), ((int)(((byte)(240)))));
45 this.resumelayout(false);
46 this.performlayout();
47
48 }
49
50 #endregion
51
52 }
53 }
以上就是全部东西了
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